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Title: Experimental optimization of beam quality extracted from a duoplasmatron proton ion source

The LANSCE accelerator facility operates with two independent ion injectors for H⁺ and H⁻ particle beams. The H⁺ ion beam is formed using a duoplasmatron source followed by a 750 keV Cockroft-Walton accelerating column. Formation of an optimal plasma meniscus is an important feature for minimizing beam emittance, and maximizing beam brightness. A series of experiments were performed to find the optimal combination of extraction voltage and extracted current for the H⁺ beam. Measurements yielded the best ratio of beam perveance to Child–Langmuir perveance of 0.52 for maximizing beam brightness.
Authors:
; ;  [1]
  1. LANL, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
22305884
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATOR FACILITIES; BEAM CURRENTS; BEAM EMITTANCE; ELECTRIC POTENTIAL; HYDROGEN IONS 1 MINUS; HYDROGEN IONS 1 PLUS; ION BEAMS; ION SOURCES; OPTIMIZATION; PROTONS; SPACE CHARGE